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Homework Help: Frequency of a pressure vs time chart

  1. May 9, 2010 #1
    1. What is the frequency and wavelength of the sound wave that produced the graph?

    2. How would you find the wavelength of the graph?

    3. I used speed = wavelength x frequency, changed it into frequency = speed / wavelength, used 343 m/s as the speed. I'm just stuck on how to get the wavelength. The units used in the graph are pascals and seconds.
  2. jcsd
  3. May 9, 2010 #2


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    Welcome to PF.

    Does the graph resemble a sine or cosine function? Try finding the period, from that you can calculate the frequency.
  4. May 9, 2010 #3
    It's a wavelength graph. No sine or cosine functions, no triangles.
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